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Structure development and control of injection-molded hydroxylapatite-reinforce...
Reis, R. L.; Cunha, A. M.; Allan, P. S.; Bevis, M. J.This article reports on the development of novel composites of starch-based polymers reinforced with hydroxylapatite (HA). Two different grades of blends of starch and ethylene vinyl alcohol copolymers were reinforced with up to 30% (wt) of sintered and nonsintered HA. The initial compounding stage was carried out either in a rotating drum or by twin-screw extrusion (TSE). Compounds were injection molded using ...
Mechanical behavior of injection-molded starch-based polymers
Reis, R. L.; Cunha, A. M.; Allan, P. S.; Bevis, M. J.This work evaluates the mechanical performance of injection-molded starch-based copolymers, 60/40 (mol/mol) starch/poly(ethylene vinyl alcohol), and the possibility of improving material properties through deliberately induced anisotropy during processing. Different types of samples were produced by conventional and shear-controlled injection molding (Scorim) and tested under tensile and impact loading. The beh...
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